“We have more people affected by bedbugs in the United States now than ever before,” Orkin Entomologist and Director of Technical Services Ron Harrison said in the release. “They were virtually unheard of in the U.S. 10 years ago.”

Nearly all pest control professionals — about 99.6 percent — have treated begbugs at some point in the country within the past five year, a figure that is up from five, 10 and 15 years ago, according to a 2015 survey released by the National Pest Management Association.

Orkin bases its ranking on bedbug treatments that it performs for both residences and commercial buildings in metro areas between Dec. 1, 2015, and Nov. 30, 2016.